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Diffstat (limited to 'system/gcc/101-pr115836.patch')
| -rw-r--r-- | system/gcc/101-pr115836.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/system/gcc/101-pr115836.patch b/system/gcc/101-pr115836.patch new file mode 100644 index 000000000..72c78f925 --- /dev/null +++ b/system/gcc/101-pr115836.patch @@ -0,0 +1,50 @@ +From: Uros Bizjak <ubizjak@gmail.com> +Date: Wed, 10 Jul 2024 07:27:27 +0000 (+0200) +Subject: middle-end: Fix stalled swapped condition code value [PR115836] +X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=47a8b464d2dd9a586a9e15242c9825e39e1ecd4c;hp=efa30f619361b043616e624e57366a50982e11df + +middle-end: Fix stalled swapped condition code value [PR115836] + +emit_store_flag_1 calculates scode (swapped condition code) at the +beginning of the function from the value of code variable. However, +code variable may change before scode usage site, resulting in +invalid stalled scode value. + +Move calculation of scode value just before its only usage site to +avoid stalled scode value. + + PR middle-end/115836 + +gcc/ChangeLog: + + * expmed.cc (emit_store_flag_1): Move calculation of + scode just before its only usage site. + +(cherry picked from commit 44933fdeb338e00c972e42224b9a83d3f8f6a757) +--- + +diff --git a/gcc/expmed.cc b/gcc/expmed.cc +index 4ec035e4843b..19765311b954 100644 +--- a/gcc/expmed.cc ++++ b/gcc/expmed.cc +@@ -5607,11 +5607,9 @@ emit_store_flag_1 (rtx target, enum rtx_code code, rtx op0, rtx op1, + enum insn_code icode; + machine_mode compare_mode; + enum mode_class mclass; +- enum rtx_code scode; + + if (unsignedp) + code = unsigned_condition (code); +- scode = swap_condition (code); + + /* If one operand is constant, make it the second one. Only do this + if the other operand is not constant as well. */ +@@ -5726,6 +5724,8 @@ emit_store_flag_1 (rtx target, enum rtx_code code, rtx op0, rtx op1, + + if (GET_MODE_CLASS (mode) == MODE_FLOAT) + { ++ enum rtx_code scode = swap_condition (code); ++ + tem = emit_cstore (target, icode, scode, mode, compare_mode, + unsignedp, op1, op0, normalizep, target_mode); + if (tem) |